| Neder-Over-Heembeek to Olivenza | 1,011.92 mi (1,628.53 km) |
| Neder-Over-Heembeek to Olot | 608.98 mi (980.05 km) |
| Neder-Over-Heembeek to Onate | 630.44 mi (1,014.59 km) |
| Neder-Over-Heembeek to Onda | 788.18 mi (1,268.45 km) |
| Neder-Over-Heembeek to Onteniente | 869.03 mi (1,398.57 km) |
| Neder-Over-Heembeek to Orihuela | 922.92 mi (1,485.30 km) |
| Neder-Over-Heembeek to Osuna | 1,053.12 mi (1,694.83 km) |
| Neder-Over-Heembeek to Ourense | 827.32 mi (1,331.44 km) |
| Neder-Over-Heembeek to Oviedo | 707.63 mi (1,138.83 km) |
| Neder-Over-Heembeek to Paiporta | 825.99 mi (1,329.30 km) |
| Neder-Over-Heembeek to Pajara | 1,831.15 mi (2,946.95 km) |
| Neder-Over-Heembeek to Palafolls | 642.49 mi (1,033.99 km) |
| Neder-Over-Heembeek to Palafrugell | 623.33 mi (1,003.15 km) |
| Neder-Over-Heembeek to Palamos | 628.41 mi (1,011.33 km) |
| Neder-Over-Heembeek to Palencia | 745.04 mi (1,199.03 km) |
